Evidence map›Paper›PMID 32632775›Full record

ArticleNeurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics2020

Intranasal Dexamethasone Reduces Mortality and Brain Damage in a Mouse Experimental Ischemic Stroke Model.

Alejandro Espinosa, Gabriela Meneses, Anahí Chavarría, Raúl Mancilla, José Pedraza-Chaverri, Agnes Fleury, Brandon Bárcena, Ivan N Pérez-Osorio, Hugo Besedovsky, Antonio Arauz and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.2field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 25 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Alejandro EspinosaDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
Gabriela MenesesDepartamento de Parasitología, Instituto Nacional de Diagnóstico y Referencia Epidemiológicos, Mexico City, 01480, Mexico.
Anahí ChavarríaFacultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, 06726, Mexico.
Raúl MancillaDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
José Pedraza-ChaverriDepartamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
Agnes FleuryDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
Brandon BárcenaDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
Ivan N Pérez-OsorioDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
Hugo BesedovskyThe Institute of Physiology and Pathophysiology, Medical Faculty, Philipps University, Marburg, D-35037, Germany.
Antonio ArauzStroke Clinic, Instituto Nacional de Neurología y Neurocirugía, Mexico City, 14269, Mexico.
Gladis FragosoDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
Edda SciuttoDepartamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico. edda@unam.mx.
Universidad Nacional Autónoma de México · MXInstituto Nacional de Neurología y Neurocirugía · MXPhilipps University of Marburg · DESecretaria de Salud · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuroinflammation triggered by the expression of damaged-associated molecular patterns released from dying cells plays a critical role in the pathogenesis of ischemic stroke. However, the benefits from the control of neuroinflammation in the clinical outcome have not been established. In this study, the effectiveness of intranasal, a highly efficient route to reach the central nervous system, and intraperitoneal dexamethasone administration in the treatment of neuroinflammation was evaluated in a 60-min middle cerebral artery occlusion (MCAO) model in C57BL/6 male mice. We performed a side-by-side comparison using intranasal versus intraperitoneal dexamethasone, a timecourse including immediate (0 h) or 4 or 12 h poststroke intranasal administration, as well as 4 intranasal doses of dexamethasone beginning 12 h after the MCAO versus a single dose at 12 h to identify the most effective conditions to treat neuroinflammation in MCAO mice. The best results were obtained 12 h after MCAO and when mice received a single dose of dexamethasone (0.25 mg/kg) intranasally. This treatment significantly reduced mortality, neurological deficits, infarct volume size, blood-brain barrier permeability in the somatosensory cortex, inflammatory cell infiltration, and glial activation. Our results demonstrate that a single low dose of intranasal dexamethasone has neuroprotective therapeutic effects in the MCAO model, showing a better clinical outcome than the intraperitoneal administration. Based on these results, we propose a new therapeutic approach for the treatment of the damage process that accompanies ischemic stroke.

Indexed as

Administration, IntranasalAnimalsAnti-Inflammatory AgentsBlood-Brain BarrierBrainBrain InjuriesBrain IschemiaDexamethasoneInfarction, Middle Cerebral ArteryIschemic StrokeMaleMiceMice, Inbred C57BLAnti-Inflammatory AgentsDexamethasoneDexamethasoneinflammationintranasal administrationischemic strokeMCAO

Identifiers

PMID32632775
PMCPMC7851226
OpenAlexW3039405203

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.